Rally dash redo

Ok attempting to make progress on this spaghetti. It's another WTF Wednesday lol. I made a mistake reading the 68 diagram. The Violet wire from backup lamp switch connector actually leads to body wiring connector. That connector has 7 wires. The White wire from b/u lamp switch goes to radio connector and is twinned up at terminal end with red wire/tracer. The red/tracer leads to fuseblock.
67....violet to body wiring plug. This plug only has 5 wires.(will check into the difference vs 68 and 7 wires)
The white wire from backup switch connector goes to ws wiper switch.
I believe the 67 white ws wiper wire is to supply 12v to switch, where as 68 it comes from being twinned at radio connector.
Does that make sense?
See my sketch attached.
unfortunately I dont have 67 harness here to verify anything, only schematics.
So gotta check 68 7 wires for body, vs 5 wires for 67.
Sketch

20200304_130510.jpg